Dental as well as skeletal fluorosis is endemic in the region of Ethiopian Rift Valley, and thernmaximum prevalence of fluorosis was observed on children at the age of 10 to 14 years. The aimrnof this study was, therefore, to determine the daily dietary fluoride intake of 10 to 15 years oldrnchildren living in Bidara Fuka and Dibibisa Kebeles of SNNPR and Oromia Regions, a ruralrnpart of the Ethiopian Rift Valley. Taking the daily dietary intake variation in to account, threernconsecutive days of twenty four hour duplicate portions of food samples were collected andrnanalyzed for fluoride by using a fluoride ion-selective electrode. Based upon the analysis of 306rnprepared food, beverages and water samples; the average daily dietary fluoride intakes ofrnchildren residing in the two Kebeles were determined. In Bidara Fuka and Dibibisa Kebeles, thernstudy participants had mean dietary fluoride intakes of 9.29 mg/day (0.310 mg/kg body weight)rnand 7.71 mg/day (0.256 mg/kg body weight), respectively. The data indicated that, in all casesrnthe average daily dietary fluoride intakes of children exceed the optimum (0.05-0.07 mg/kg bwrn/day) and maximum (0.08 or 0.1 mg/kg bw/day), threshold values of dietary fluoride intakernrecommended by CDA, COT, US EPA and other toxicological studies. The contribution of foodrnfor daily fluoride intake was also as important as drinking water, which is 49.6% and 53% inrnBidara Fuka and Dibibisa Kebeles, respectively. The drinking water source in Bidara Fuka andrnDibibisa is only one single deep well with a service years of 31 and 24, respectively. Fluoridernconcentrations in groundwater samples of Bidara Fuka and Dibibisa Kebeles were 4.19 andrn3.16 mg/L, respectively. This is much beyond the WHO permissible limit of 1.5 mg/L. Dentalrnfluorosis was evaluated using Deanâ€™s Index; that considers fluorosis as severe when there isrnpronounced staining and/or pitting of the enamel. In Bidara Fuka 66% of the individuals showedrnsigns of moderate and severe dental fluorosis. On the other hand, 54% of the individuals werernlisted as having moderate and severe dental fluorosis in Dibibisa Kebele. The study participantsrnin the two Kebeles had 98% of very mild to severe dental fluorosis. Furthermore, physicalrnexercises method developed in India was employed for the assessment of prevalence of bonernfluorosis. Accordingly, 69% and 27% of the study participants in Bidara Fuka and DibibisarnKebeles were unable to do one or both of the physical exercises, indicating signs of skeletalrnfluorosis. On the whole, the study result revealed that prevalence of fluorosis in both Kebeles atrnsuch early age group was high, the fact consistent to the higher hazard quotient values of 3.10rnand 2.56 obtained in Bidara Fuka and Dibibisa Kebeles, respectively.rnKey words: Ethiopian Rift Valley, daily fluoride intake, fluoride, fluorosis, ground water.